"Looks like a great number. We were high on the Street and they beat our number pretty handily," said UBS analyst Brian Pitz. "There are some currency benefits on the cost-per-click side. They hedged part of that, so that doesn't include any currency. Those are just raw numbers, so you're going to see some benefits to pricing from currency."

Google's capital expenditures _ what it pays for data centers, servers and networking equipment to keep its growing number of Web services online—increased to $757 million from $186 million a year earlier.

Google had 23,331 full-time employees as of Sept. 30, up from 21,805 on June 30. It also more than quadrupled spending on data centers and other technology versus it did a year ago.

Investors worry that the company, seeking new sources of growth, is spending recklessly on initiatives such as its Android mobile phone software, acquisitions, renewable energy projects and even automated cars, with uncertain returns. At the same time, social networking giant Facebook poses a growing threat to Google's online advertising business.

Google said its average cost per click rose 3 percent from a year ago, meaning companies paid more to place ads. People clicked on ads 16 percent more than they did in the same period last year.

During a conference call with analysts, Google said sales of its display ads, which include those on YouTube, are on a pace that would translate to $2.5 billion annually. Its mobile advertising businesses are on pace to bring in $1 billion in revenue annually. The figures are the most specific Google has released about the two emerging businesses.

The company, which is based in Mountain View, Calif., indicated it would keep hiring and spending.

"Our core business grew very well, and our newer businesses—particularly display and mobile—continued to show significant momentum," said CEO Eric Schmidt in a statement. "Going forward, we remain committed to aggressive investment in both our people and our products as we pursue an innovation agenda."